Petroleumis a very important mineral. It gives us heat and light. It gives us power for our cars, planes, and ships. Also, it gives us power for machines of all kinds.
How is petroleum formed? Scientists believe petroleum comes from the remains of plants and animals (Remains are what is left after a plant or animal has died.)
What exactly is petroleum? Petroleum is a mineral that is a mixture of hydrocarbons. It is an oily liquid, which may be brown, green, or black in colors. The word “petroleum” comes from Greek. It means “rock oil”.
Crude (天然的, 未加工的) oil is petroleum that comes directly from deep in the ground. It is then taken to a refinery. a refinery is a kind of factory to refine oil. At a refinery the crude oil is separated into many parts. From the refined petroleum we get important things, such as gasoline, kerosene, fertilizer, detergents and a lot of other useful things. In fact, there are thousands of such things that we can get. Petroleum really is of great value!
小题1:Which of the following is Not true?
A．“ Petroleum” is a German word.
B．“Petroleum” suggests “ coming from rocks”.
C．“ Petroleum” isn’t an English word in the original.
D．“Petroleum” is of Greek origin.小题2:Which of the following is true?
A．We can kill animals and plants, and get petroleum by burning them us.
B．Over a very long period of time, under certain conditions, dead trees and bodies of animals were turned into petroleum under great pressure.
C．Petroleum is a kind of metal mineral like copper（铜）or iron.
D．Petroleum has three states.小题3:The word “refine” in the 4th paragraph can be replaced by “______”.
A．get unmixed with other substances
B．divide into separate parts
C．get mixed with other substances
D．choose the best substance小题4: Which of the following might be the best title for the passage?
A．An Important Source of Energy.
B．Petroleum and Its Uses.
C．Where Does Petroleum Come From?
D．A Special Rock Oil.小题5:This passage is most likely taken from _____.
A．a fairy tale
B．a novel
C．a popular science magazine
D．a scientist’s diary
